title: Radiographic evaluation of root canal multiplicity in mandibular first premolars.
mesh_terms: D000704:Analysis of Variance; D001641:Bicuspid / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D002244:Carbon; D004396:Coloring Agents; D003786:Dental Pulp Cavity / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D008334:Mandible / Q000000981:diagnostic imaging; D015588:Observer Variation; D011859:Radiography; D015203:Reproducibility of Results
chemical_list: D004396:Coloring Agents; C028433:chinese ink; D002244:Carbon